Hertel 06822290 Roughing End Mill 1/2 in 4 Flute Cobalt

Product Description

The HERTEL 06822290 is a single-end roughing end mill engineered for aggressive material removal in machining applications. Built from M42 cobalt high-speed steel with a bright, uncoated finish, it delivers the hardness and heat resistance needed for interrupted cuts and tough ferrous materials. The 1/2-inch diameter cutter features 4 flutes with a right-hand flute direction and right-hand cutting action. With a 2-inch length of cut and 4-inch overall length, this is a regular-length tool sized for general-purpose roughing on vertical mills, knee mills, and CNC machining centers. It is installed and used by machinists and tool-and-die professionals in job shops and production environments.

This end mill is suited for roughing passes on steel, alloy steel, stainless steel, and similar ferrous workpieces where high chip loads and fast material removal rates are the priority. The cobalt M42 substrate handles elevated cutting temperatures better than standard M2 HSS, making it a practical choice when coolant is limited or when cutting harder alloys. The bright uncoated finish is appropriate for applications where coating adhesion or lubricity is not a requirement. This is a non-centercutting tool and should not be used for direct plunge cuts into solid material.

Key Features

• M42 cobalt high-speed steel construction for improved heat and wear resistance over standard HSS
• 4-flute geometry supports higher feed rates during roughing passes
• Right-hand cut, right-hand helix for conventional milling setups
• Bright, uncoated finish suitable for general ferrous machining
• Non-centercutting design requires pre-drilled entry or ramping strategy
• Regular-length profile for rigidity in standard-depth pockets and slots

Compatibility

Designed as an OEM-style roughing end mill for use in standard 1/2-inch collets, end mill holders, or set-screw arbors on manual and CNC milling machines.

Installation Notes

Installation is performed by machinists using a standard end mill holder or collet chuck rated for the 1/2-inch shank diameter. Ensure the spindle is fully stopped and the machine is locked out before mounting or removing the tool. Verify runout with a dial indicator after seating to minimize premature wear. Because this is a non-centercutting end mill, do not plunge directly into solid stock without a pre-drilled hole or an angular ramp entry path.